| 钾肥对西藏垂穗披碱草种子产量的影响 |
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| 引用本文： | 田福平,李锦华,张小甫,余成群,王春梅,张怀山,黄秀霞.钾肥对西藏垂穗披碱草种子产量的影响[J].种子,2010,29(12). |
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| 作者姓名： | 田福平 李锦华 张小甫 余成群 王春梅 张怀山 黄秀霞 |
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| 作者单位： | 中国农业科学院兰州畜牧与兽药研究所;农业部兰州黄土高原生态环境重点野外科学观测试验站;中国科学院地理科学与资源研究所;西藏自治区农业技术推广服务中心; |
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| 基金项目： | 国家科技支撑计划子课题，中央级公益性科研院所基本科研业务费专项资金项目 |
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| 摘 要： | 垂穗披碱草作为西藏种植面积最广的优质牧草之一,其种子生产问题在当地畜牧业生产中显得尤为重要。研究表明,不同时期施钾均可影响垂穗披碱草生殖枝数/m2、小穗数/生殖枝、小花数/小穗、种子数/小穗和千粒重。施钾可增加垂穗披碱草的实际种子产量。其中拔节期施钾种子实际产量为221.8 kg/hm2,与对照(ck)差异显著(p0.05)。分蘖期施钾潜在种子产量和表现种子产量均最高,为2 803.8 kg/hm2和1 040.2 kg/hm2,与对照(ck)差异极显著(p0.01)。
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| 关 键 词： | 钾肥 西藏 垂穗披碱草 种子产量 |
Effect of Potassium Fertilizer Application on Elymus nutans Seed Yield in Tibet |
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| TIAN Fu-ping,LI Jin-hua,ZHANG Xiao-fu,YU Cheng-qun,WANG Chun-mei,ZHANG Huai-shan,HUANG Xiu-xia.Effect of Potassium Fertilizer Application on Elymus nutans Seed Yield in Tibet[J].Seed,2010,29(12). |
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| Authors: | TIAN Fu-ping LI Jin-hua ZHANG Xiao-fu YU Cheng-qun WANG Chun-mei ZHANG Huai-shan HUANG Xiu-xia |
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| Institution: | TIAN Fu-ping1,2,LI Jin-hua1,ZHANG Xiao-fu1,YU Cheng-qun3,WANG Chun-mei1,ZHANG Huai-shan1,HUANG Xiu-xia4(1.Lanzhou Institute of Animal and Veterinary Pharmaceutics Sciences Chinese Academy of Agricultural Sciences,Lanzhou Gansu 730050,China,2.The Lanzhou Scientific Observation and Experiment Field Station of Ministry of Agriculture for Ecological System in Loess Plateau Areas,3.Institute of Geographical Sciences and Natural Resources Research,CAS,Beijing 100101,4.Agricultural... |
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| Abstract: | Elymus nutans is extensively cultivated in Tibet,its seed production is very important in the local livestock production.Field experiments were conducted in Dazi Station in 2009.The results showed that K fertilizer application at different stages could affect fertile tillers/m2,spikelets/fertile tiller,florets/spikelet,seed number/spikelet and thousand-seed weight of Elymus nutans,K fertilizer application increased the actual seed yield.The actual seed production of Jointing stage was 221.8kg/hm2,and it was... |
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| Keywords: | potassium fertilizer tibet Elymus nutans Griseb seed yield |
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